arch/arm/mach-s3c2410/mach-n30.c

   1 /* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
   2  * Yakumo AlphaX and Airis NC05 PDAs.
   3  *
   4  * Copyright (c) 2003-2005 Simtec Electronics
   5  *      Ben Dooks <ben@simtec.co.uk>
   6  *
   7  * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
   8  *
   9  * There is a wiki with more information about the n30 port at
  10  * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/types.h>
  19
  20 #include <linux/gpio_keys.h>
  21 #include <linux/init.h>
  22 #include <linux/gpio.h>
  23 #include <linux/input.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/serial_core.h>
  27 #include <linux/timer.h>
  28 #include <linux/io.h>
  29 #include <linux/mmc/host.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/irq.h>
  33 #include <asm/mach-types.h>
  34
  35 #include <mach/fb.h>
  36 #include <mach/leds-gpio.h>
  37 #include <mach/regs-gpio.h>
  38 #include <mach/regs-lcd.h>
  39
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/irq.h>
  42 #include <asm/mach/map.h>
  43
  44 #include <plat/iic.h>
  45 #include <plat/regs-serial.h>
  46
  47 #include <plat/clock.h>
  48 #include <plat/cpu.h>
  49 #include <plat/devs.h>
  50 #include <plat/mci.h>
  51 #include <plat/s3c2410.h>
  52 #include <plat/udc.h>
  53
  54 static struct map_desc n30_iodesc[] __initdata = {
  55         /* nothing here yet */
  56 };
  57
  58 static struct s3c2410_uartcfg n30_uartcfgs[] = {
  59         /* Normal serial port */
  60         [0] = {
  61                 .hwport      = 0,
  62                 .flags       = 0,
  63                 .ucon        = 0x2c5,
  64                 .ulcon       = 0x03,
  65                 .ufcon       = 0x51,
  66         },
  67         /* IR port */
  68         [1] = {
  69                 .hwport      = 1,
  70                 .flags       = 0,
  71                 .uart_flags  = UPF_CONS_FLOW,
  72                 .ucon        = 0x2c5,
  73                 .ulcon       = 0x43,
  74                 .ufcon       = 0x51,
  75         },
  76         /* On the N30 the bluetooth controller is connected here.
  77          * On the N35 and variants the GPS receiver is connected here. */
  78         [2] = {
  79                 .hwport      = 2,
  80                 .flags       = 0,
  81                 .ucon        = 0x2c5,
  82                 .ulcon       = 0x03,
  83                 .ufcon       = 0x51,
  84         },
  85 };
  86
  87 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
  88         .vbus_pin               = S3C2410_GPG(1),
  89         .vbus_pin_inverted      = 0,
  90         .pullup_pin             = S3C2410_GPB(3),
  91 };
  92
  93 static struct gpio_keys_button n30_buttons[] = {
  94         {
  95                 .gpio           = S3C2410_GPF(0),
  96                 .code           = KEY_POWER,
  97                 .desc           = "Power",
  98                 .active_low     = 0,
  99         },
 100         {
 101                 .gpio           = S3C2410_GPG(9),
 102                 .code           = KEY_UP,
 103                 .desc           = "Thumbwheel Up",
 104                 .active_low     = 0,
 105         },
 106         {
 107                 .gpio           = S3C2410_GPG(8),
 108                 .code           = KEY_DOWN,
 109                 .desc           = "Thumbwheel Down",
 110                 .active_low     = 0,
 111         },
 112         {
 113                 .gpio           = S3C2410_GPG(7),
 114                 .code           = KEY_ENTER,
 115                 .desc           = "Thumbwheel Press",
 116                 .active_low     = 0,
 117         },
 118         {
 119                 .gpio           = S3C2410_GPF(7),
 120                 .code           = KEY_HOMEPAGE,
 121                 .desc           = "Home",
 122                 .active_low     = 0,
 123         },
 124         {
 125                 .gpio           = S3C2410_GPF(6),
 126                 .code           = KEY_CALENDAR,
 127                 .desc           = "Calendar",
 128                 .active_low     = 0,
 129         },
 130         {
 131                 .gpio           = S3C2410_GPF(5),
 132                 .code           = KEY_ADDRESSBOOK,
 133                 .desc           = "Contacts",
 134                 .active_low     = 0,
 135         },
 136         {
 137                 .gpio           = S3C2410_GPF(4),
 138                 .code           = KEY_MAIL,
 139                 .desc           = "Mail",
 140                 .active_low     = 0,
 141         },
 142 };
 143
 144 static struct gpio_keys_platform_data n30_button_data = {
 145         .buttons        = n30_buttons,
 146         .nbuttons       = ARRAY_SIZE(n30_buttons),
 147 };
 148
 149 static struct platform_device n30_button_device = {
 150         .name           = "gpio-keys",
 151         .id             = -1,
 152         .dev            = {
 153                 .platform_data  = &n30_button_data,
 154         }
 155 };
 156
 157 static struct gpio_keys_button n35_buttons[] = {
 158         {
 159                 .gpio           = S3C2410_GPF(0),
 160                 .code           = KEY_POWER,
 161                 .type           = EV_PWR,
 162                 .desc           = "Power",
 163                 .active_low     = 0,
 164                 .wakeup         = 1,
 165         },
 166         {
 167                 .gpio           = S3C2410_GPG(9),
 168                 .code           = KEY_UP,
 169                 .desc           = "Joystick Up",
 170                 .active_low     = 0,
 171         },
 172         {
 173                 .gpio           = S3C2410_GPG(8),
 174                 .code           = KEY_DOWN,
 175                 .desc           = "Joystick Down",
 176                 .active_low     = 0,
 177         },
 178         {
 179                 .gpio           = S3C2410_GPG(6),
 180                 .code           = KEY_DOWN,
 181                 .desc           = "Joystick Left",
 182                 .active_low     = 0,
 183         },
 184         {
 185                 .gpio           = S3C2410_GPG(5),
 186                 .code           = KEY_DOWN,
 187                 .desc           = "Joystick Right",
 188                 .active_low     = 0,
 189         },
 190         {
 191                 .gpio           = S3C2410_GPG(7),
 192                 .code           = KEY_ENTER,
 193                 .desc           = "Joystick Press",
 194                 .active_low     = 0,
 195         },
 196         {
 197                 .gpio           = S3C2410_GPF(7),
 198                 .code           = KEY_HOMEPAGE,
 199                 .desc           = "Home",
 200                 .active_low     = 0,
 201         },
 202         {
 203                 .gpio           = S3C2410_GPF(6),
 204                 .code           = KEY_CALENDAR,
 205                 .desc           = "Calendar",
 206                 .active_low     = 0,
 207         },
 208         {
 209                 .gpio           = S3C2410_GPF(5),
 210                 .code           = KEY_ADDRESSBOOK,
 211                 .desc           = "Contacts",
 212                 .active_low     = 0,
 213         },
 214         {
 215                 .gpio           = S3C2410_GPF(4),
 216                 .code           = KEY_MAIL,
 217                 .desc           = "Mail",
 218                 .active_low     = 0,
 219         },
 220         {
 221                 .gpio           = S3C2410_GPF(3),
 222                 .code           = SW_RADIO,
 223                 .desc           = "GPS Antenna",
 224                 .active_low     = 0,
 225         },
 226         {
 227                 .gpio           = S3C2410_GPG(2),
 228                 .code           = SW_HEADPHONE_INSERT,
 229                 .desc           = "Headphone",
 230                 .active_low     = 0,
 231         },
 232 };
 233
 234 static struct gpio_keys_platform_data n35_button_data = {
 235         .buttons        = n35_buttons,
 236         .nbuttons       = ARRAY_SIZE(n35_buttons),
 237 };
 238
 239 static struct platform_device n35_button_device = {
 240         .name           = "gpio-keys",
 241         .id             = -1,
 242         .num_resources  = 0,
 243         .dev            = {
 244                 .platform_data  = &n35_button_data,
 245         }
 246 };
 247
 248 /* This is the bluetooth LED on the device. */
 249 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
 250         .name           = "blue_led",
 251         .gpio           = S3C2410_GPG(6),
 252         .def_trigger    = "",
 253 };
 254
 255 /* This is the blue LED on the device. Originally used to indicate GPS activity
 256  * by flashing. */
 257 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
 258         .name           = "blue_led",
 259         .gpio           = S3C2410_GPD(8),
 260         .def_trigger    = "",
 261 };
 262
 263 /* This LED is driven by the battery microcontroller, and is blinking
 264  * red, blinking green or solid green when the battery is low,
 265  * charging or full respectively.  By driving GPD9 low, it's possible
 266  * to force the LED to blink red, so call that warning LED.  */
 267 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
 268         .name           = "warning_led",
 269         .flags          = S3C24XX_LEDF_ACTLOW,
 270         .gpio           = S3C2410_GPD(9),
 271         .def_trigger    = "",
 272 };
 273
 274 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
 275         .name           = "warning_led",
 276         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
 277         .gpio           = S3C2410_GPD(9),
 278         .def_trigger    = "",
 279 };
 280
 281 static struct platform_device n30_blue_led = {
 282         .name           = "s3c24xx_led",
 283         .id             = 1,
 284         .dev            = {
 285                 .platform_data  = &n30_blue_led_pdata,
 286         },
 287 };
 288
 289 static struct platform_device n35_blue_led = {
 290         .name           = "s3c24xx_led",
 291         .id             = 1,
 292         .dev            = {
 293                 .platform_data  = &n35_blue_led_pdata,
 294         },
 295 };
 296
 297 static struct platform_device n30_warning_led = {
 298         .name           = "s3c24xx_led",
 299         .id             = 2,
 300         .dev            = {
 301                 .platform_data  = &n30_warning_led_pdata,
 302         },
 303 };
 304
 305 static struct platform_device n35_warning_led = {
 306         .name           = "s3c24xx_led",
 307         .id             = 2,
 308         .dev            = {
 309                 .platform_data  = &n35_warning_led_pdata,
 310         },
 311 };
 312
 313 static struct s3c2410fb_display n30_display __initdata = {
 314         .type           = S3C2410_LCDCON1_TFT,
 315         .width          = 240,
 316         .height         = 320,
 317         .pixclock       = 170000,
 318
 319         .xres           = 240,
 320         .yres           = 320,
 321         .bpp            = 16,
 322         .left_margin    = 3,
 323         .right_margin   = 40,
 324         .hsync_len      = 40,
 325         .upper_margin   = 2,
 326         .lower_margin   = 3,
 327         .vsync_len      = 2,
 328
 329         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
 330 };
 331
 332 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
 333         .displays       = &n30_display,
 334         .num_displays   = 1,
 335         .default_display = 0,
 336         .lpcsel         = 0x06,
 337 };
 338
 339 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
 340 {
 341         switch (power_mode) {
 342         case MMC_POWER_ON:
 343         case MMC_POWER_UP:
 344                 gpio_set_value(S3C2410_GPG(4), 1);
 345                 break;
 346         case MMC_POWER_OFF:
 347         default:
 348                 gpio_set_value(S3C2410_GPG(4), 0);
 349                 break;
 350         }
 351 }
 352
 353 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
 354         .gpio_detect    = S3C2410_GPF(1),
 355         .gpio_wprotect  = S3C2410_GPG(10),
 356         .ocr_avail      = MMC_VDD_32_33,
 357         .set_power      = n30_sdi_set_power,
 358 };
 359
 360 static struct platform_device *n30_devices[] __initdata = {
 361         &s3c_device_lcd,
 362         &s3c_device_wdt,
 363         &s3c_device_i2c0,
 364         &s3c_device_iis,
 365         &s3c_device_ohci,
 366         &s3c_device_rtc,
 367         &s3c_device_usbgadget,
 368         &s3c_device_sdi,
 369         &n30_button_device,
 370         &n30_blue_led,
 371         &n30_warning_led,
 372 };
 373
 374 static struct platform_device *n35_devices[] __initdata = {
 375         &s3c_device_lcd,
 376         &s3c_device_wdt,
 377         &s3c_device_i2c0,
 378         &s3c_device_iis,
 379         &s3c_device_rtc,
 380         &s3c_device_usbgadget,
 381         &s3c_device_sdi,
 382         &n35_button_device,
 383         &n35_blue_led,
 384         &n35_warning_led,
 385 };
 386
 387 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
 388         .flags          = 0,
 389         .slave_addr     = 0x10,
 390         .frequency      = 10*1000,
 391 };
 392
 393 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
 394  * state so that we can boot Linux directly from flash. */
 395 static void __init n30_hwinit(void)
 396 {
 397         /* GPA0-11 special functions -- unknown what they do
 398          * GPA12 N30 special function -- unknown what it does
 399          *       N35/PiN output -- unknown what it does
 400          *
 401          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
 402          * don't think it does anything useful on the N30, so I ought
 403          * to make it an output there too since it always driven to 0
 404          * as far as I can tell. */
 405         if (machine_is_n30())
 406                 __raw_writel(0x007fffff, S3C2410_GPACON);
 407         if (machine_is_n35())
 408                 __raw_writel(0x007fefff, S3C2410_GPACON);
 409         __raw_writel(0x00000000, S3C2410_GPADAT);
 410
 411         /* GPB0 TOUT0 backlight level
 412          * GPB1 output 1=backlight on
 413          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
 414          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
 415          * GPB4 N30 output -- unknown function
 416          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
 417          * GPB5 output -- unknown function
 418          * GPB6 input -- unknown function
 419          * GPB7 output -- unknown function
 420          * GPB8 output -- probably LCD driver enable
 421          * GPB9 output -- probably LCD VSYNC driver enable
 422          * GPB10 output -- probably LCD HSYNC driver enable
 423          */
 424         __raw_writel(0x00154556, S3C2410_GPBCON);
 425         __raw_writel(0x00000750, S3C2410_GPBDAT);
 426         __raw_writel(0x00000073, S3C2410_GPBUP);
 427
 428         /* GPC0 input RS232 DCD/DSR/RI
 429          * GPC1 LCD
 430          * GPC2 output RS232 DTR?
 431          * GPC3 input RS232 DCD/DSR/RI
 432          * GPC4 LCD
 433          * GPC5 output 0=NAND write enabled, 1=NAND write protect
 434          * GPC6 input -- unknown function
 435          * GPC7 input charger status 0=charger connected
 436          *      this input can be triggered by power on the USB device
 437          *      port too, but will go back to disconnected soon after.
 438          * GPC8 N30/N35 output -- unknown function, always driven to 1
 439          *      PiN input -- unknown function, always read as 1
 440          *      Make it an input with a pull up for all models.
 441          * GPC9-15 LCD
 442          */
 443         __raw_writel(0xaaa80618, S3C2410_GPCCON);
 444         __raw_writel(0x0000014c, S3C2410_GPCDAT);
 445         __raw_writel(0x0000fef2, S3C2410_GPCUP);
 446
 447         /* GPD0 input -- unknown function
 448          * GPD1-D7 LCD
 449          * GPD8 N30 output -- unknown function
 450          *      N35/PiN output 1=GPS LED on
 451          * GPD9 output 0=power led blinks red, 1=normal power led function
 452          * GPD10 output -- unknown function
 453          * GPD11-15 LCD drivers
 454          */
 455         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
 456         __raw_writel(0x00000601, S3C2410_GPDDAT);
 457         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
 458
 459         /* GPE0-4 I2S audio bus
 460          * GPE5-10 SD/MMC bus
 461          * E11-13 outputs -- unknown function, probably power management
 462          * E14-15 I2C bus connected to the battery controller
 463          */
 464         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
 465         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
 466         __raw_writel(0x0000f81f, S3C2410_GPEUP);
 467
 468         /* GPF0  input 0=power button pressed
 469          * GPF1  input SD/MMC switch 0=card present
 470          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
 471          *       N35/PiN 0=reset button pressed
 472          * GPF3  N30/PiN input -- unknown function
 473          *       N35 input GPS antenna position, 0=antenna closed, 1=open
 474          * GPF4  input 0=button 4 pressed
 475          * GPF5  input 0=button 3 pressed
 476          * GPF6  input 0=button 2 pressed
 477          * GPF7  input 0=button 1 pressed
 478          */
 479         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
 480         __raw_writel(0x00000000, S3C2410_GPFDAT);
 481         __raw_writel(0x000000ff, S3C2410_GPFUP);
 482
 483         /* GPG0  input RS232 DCD/DSR/RI
 484          * GPG1  input 1=USB gadget port has power from a host
 485          * GPG2  N30 input -- unknown function
 486          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
 487          * GPG3  N30 output -- unknown function
 488          *       N35/PiN input with unknown function
 489          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
 490          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
 491          *       N35/PiN input joystick right
 492          * GPG6  N30 output 0=blue led on, 1=off
 493          *       N35/PiN input joystick left
 494          * GPG7  input 0=thumbwheel pressed
 495          * GPG8  input 0=thumbwheel down
 496          * GPG9  input 0=thumbwheel up
 497          * GPG10 input SD/MMC write protect switch
 498          * GPG11 N30 input -- unknown function
 499          *       N35 output 0=GPS antenna powered, 1=not powered
 500          *       PiN output -- unknown function
 501          * GPG12-15 touch screen functions
 502          *
 503          * The pullups differ between the models, so enable all
 504          * pullups that are enabled on any of the models.
 505          */
 506         if (machine_is_n30())
 507                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
 508         if (machine_is_n35())
 509                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
 510         __raw_writel(0x0000e800, S3C2410_GPGDAT);
 511         __raw_writel(0x0000f86f, S3C2410_GPGUP);
 512
 513         /* GPH0/1/2/3 RS232 serial port
 514          * GPH4/5 IrDA serial port
 515          * GPH6/7  N30 BlueTooth serial port
 516          *         N35/PiN GPS receiver
 517          * GPH8 input -- unknown function
 518          * GPH9 CLKOUT0 HCLK -- unknown use
 519          * GPH10 CLKOUT1 FCLK -- unknown use
 520          *
 521          * The pull ups for H6/H7 are enabled on N30 but not on the
 522          * N35/PiN.  I suppose is useful for a budget model of the N30
 523          * with no bluetooh.  It doesn't hurt to have the pull ups
 524          * enabled on the N35, so leave them enabled for all models.
 525          */
 526         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
 527         __raw_writel(0x000005ef, S3C2410_GPHDAT);
 528         __raw_writel(0x0000063f, S3C2410_GPHUP);
 529 }
 530
 531 static void __init n30_map_io(void)
 532 {
 533         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
 534         n30_hwinit();
 535         s3c24xx_init_clocks(0);
 536         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
 537 }
 538
 539 /* GPB3 is the line that controls the pull-up for the USB D+ line */
 540
 541 static void __init n30_init(void)
 542 {
 543         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
 544
 545         s3c24xx_fb_set_platdata(&n30_fb_info);
 546         s3c24xx_udc_set_platdata(&n30_udc_cfg);
 547         s3c24xx_mci_set_platdata(&n30_mci_cfg);
 548         s3c_i2c0_set_platdata(&n30_i2ccfg);
 549
 550         /* Turn off suspend on both USB ports, and switch the
 551          * selectable USB port to USB device mode. */
 552
 553         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 554                               S3C2410_MISCCR_USBSUSPND0 |
 555                               S3C2410_MISCCR_USBSUSPND1, 0x0);
 556
 557         if (machine_is_n30()) {
 558                 /* Turn off suspend on both USB ports, and switch the
 559                  * selectable USB port to USB device mode. */
 560                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 561                                       S3C2410_MISCCR_USBSUSPND0 |
 562                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
 563
 564                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
 565         }
 566
 567         if (machine_is_n35()) {
 568                 /* Turn off suspend and switch the selectable USB port
 569                  * to USB device mode.  Turn on suspend for the host
 570                  * port since it is not connected on the N35.
 571                  *
 572                  * Actually, the host port is available at some pads
 573                  * on the back of the device, so it would actually be
 574                  * possible to add a USB device inside the N35 if you
 575                  * are willing to do some hardware modifications. */
 576                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
 577                                       S3C2410_MISCCR_USBSUSPND0 |
 578                                       S3C2410_MISCCR_USBSUSPND1,
 579                                       S3C2410_MISCCR_USBSUSPND0);
 580
 581                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
 582         }
 583 }
 584
 585 MACHINE_START(N30, "Acer-N30")
 586         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
 587                                 Ben Dooks <ben-linux@fluff.org>
 588         */
 589         .atag_offset    = 0x100,
 590         .timer          = &s3c24xx_timer,
 591         .init_machine   = n30_init,
 592         .init_irq       = s3c24xx_init_irq,
 593         .map_io         = n30_map_io,
 594 MACHINE_END
 595
 596 MACHINE_START(N35, "Acer-N35")
 597         /* Maintainer: Christer Weinigel <christer@weinigel.se>
 598         */
 599         .atag_offset    = 0x100,
 600         .timer          = &s3c24xx_timer,
 601         .init_machine   = n30_init,
 602         .init_irq       = s3c24xx_init_irq,
 603         .map_io         = n30_map_io,
 604 MACHINE_END